Ars Technica: “Verizon and AT&T have promised to stop selling their mobile customers’ location information to third-party data brokers following a security problem that leaked the real-time location of US cell phone users. Sen. Ron Wyden (D-Ore.) recently urged all four major carriers to stop the practice, and today he published responses he received from Verizon, AT&T, T-Mobile USA, and Sprint. Wyden’s statement praised Verizon for “taking quick action to protect its customers’ privacy and security,” but he criticized the other carriers for not making the same promise. “After my investigation and follow-up reports revealed that middlemen are selling Americans’ location to the highest bidder without their consent or making it available on insecure Web portals, Verizon did the responsible thing and promptly announced it was cutting these companies off,” Wyden said. “In contrast, AT&T, T-Mobile, and Sprint…